How to change color in segment code LCD screen

[Summary description] We commonly have black and white characters on a segment code LCD screen, or black characters on a white background, so do you know how the backlight source in the segment code LCD screen changes color? Today, I would like to briefly introduce to you.

As we all know, the segment LCD screen needs a backlight to have the effect of emitting light, which is what we call the backlight. As we all know, the lamp beads of the backlight can realize the transformation of the overall color of the backlight.

For example, red and blue two-color lamp beads, or red, green and blue three-color lamp beads, but its price is relatively high, relative to the overall circuit requirements are relatively high, today Xiaobian here to give you a suggestion.

That is, when designing the backlight source, the lights on both sides of the backlight can be emitted, the lamp beads on one side are green, and the color of the lamp beads on the other side is red, so that the color change can be realized, which can reduce the cost in the production process. , There are good ones, of course there are also bad ones. One of its drawbacks is that the color change using this method can convert the color between red and green, and thousands of colors can be realized without RGB lamp beads. However, for ordinary backlight products, this is completely possible, and the relative cost will be relatively saved, which is more time-saving and labor-saving.